I would start by approaching the topic of having children, and explain that you are not able to father children. I wouldn't start with the anatomy part, because there is always the possibility that you can have artificial testicles put into your scrotum. So if she is bothered by the esthetics of it talking about no testicles right away might be harder to deal with. Just find the courage to do it. Why wait? Eventually she will figure it out.
you need to have a orgasim, you are feeling blue balls
Males have testicles.
Tell his girlfriend or tell him to dump her for you
No. There is no way she could squeeze that hard.
You are a sweet girlfriend when you tell him you love him
Tell your girlfriend the truth!
Male hamsters have very large testicles.
1st tell him to stop and then it dosnt matter if you like his girlfriend or not tell her
Say to her, "You're my first girlfriend."
Ask his girlfriend
say "i have a girlfriend" quick &easy
if shes your girlfriend your already wit her